作者查詢 / keith291
作者 keith291 在 PTT 全部看板的留言(推文), 共8271則
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2F推:三角形APS:三角形APC同底等高 面積比=底的比03/20 23:16
3F→:再三角形APC和三角形ABS同底等高 面積比=底的比03/20 23:17
4F→:可同樣求出小三角形和全部面積比 之後一樣用扣的03/20 23:17
1F推:請直接背e^x=Σ(x^n)/n!會比較容易對照218.166.60.211 03/20 23:32
2F→:出代x=ln6就是題目要的218.166.60.211 03/20 23:32
2F推:其實只是2>√(a+b)這行左右同乘√(ab)就得到你要的了03/19 18:05
4F推:消勾勾~消勾勾~03/21 00:02
4F→:Jesen inequality 且m有限制範圍03/18 00:50
5F→:不懂樓上在說什麼 取b_k={(-1)^(k-1)}/k218.166.65.236 03/18 00:13
6F→:則b_k收斂 (-1)^k*b_k 不收斂218.166.65.236 03/18 00:14
5F推:話說我發現Math 15978 我之前解過...218.166.48.202 03/14 13:19
6F→:難怪很眼熟218.166.48.202 03/14 13:20
1F→:分部積分 拆成x/(1+x^2)^2和arcsin(x)218.166.56.179 03/13 01:28
3F推:少條件 無固定值03/06 18:40
11F推:這樣說好了 我可以畫出無窮多個滿足題意但正方形邊長03/07 15:28
12F→:都不同的圖形03/07 15:29
13F推:你只要先做出2個相似直角三角形 斜邊長分別為3,403/07 15:33
14F推:算了...我用GSP的圖片說明 http://0rz.tw/YmsG603/07 16:16